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Siddiki AKMNA, Lin J, Balkus KJ. Encapsulation of ZnO and Ho:ZnO Nanoparticles in the Core of Wrinkled Mesoporous Silica. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:12956-12965. [PMID: 37647154 DOI: 10.1021/acs.langmuir.3c02225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
Wrinkled mesoporous silica (WMS) has a flower- or dendritic-like morphology, tunable pore size, and highly ordered and accessible three-dimensional (3D) pore structures. In this research, a method to encapsulate semiconductor nanoparticles in the core of the wrinkled mesoporous silica during synthesis is described. Highly uniform zinc oxide and holmium-doped zinc oxide nanoparticles have been synthesized by a sonochemical method. Zinc oxide and holmium-doped zinc oxide nanoparticles have been encapsulated in wrinkled mesoporous silica during synthesis. The ZnO@WMS and Ho:ZnO@WMS particles have been characterized by transmission electron microscopy (TEM), scanning electron microscopy (SEM), UV-vis spectroscopy, fluorescence, dynamic light scattering (DLS), confocal microscopy, and X-ray diffraction (XRD).
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Affiliation(s)
- A K M Nur Alam Siddiki
- Department of Chemistry and Biochemistry, University of Texas at Dallas, Dallas, Texas 75080, United States
| | - Jason Lin
- Department of Chemistry and Biochemistry, University of Texas at Dallas, Dallas, Texas 75080, United States
| | - Kenneth J Balkus
- Department of Chemistry and Biochemistry, University of Texas at Dallas, Dallas, Texas 75080, United States
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2
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Das A, Liu D, Wary RR, Vasenko AS, Prezhdo OV, Nair RG. Enhancement of Photocatalytic and Photoelectrochemical Performance of ZnO by Mg Doping: Experimental and Density Functional Theory Insights. J Phys Chem Lett 2023; 14:4134-4141. [PMID: 37103474 DOI: 10.1021/acs.jpclett.3c00736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Doped ZnO nanostructures have shown great potential for solar energy applications. Considering the compatible ionic radius, Mg atoms can be doped into ZnO at different concentrations. The current work reports a combined experimental and density functional theory study on the influence of the Mg dopant concentration on ZnO performance simultaneously for photocatalytic dye removal and photoelectrochemical water splitting. Among all the samples, Mg(3)-ZnO (3 at. % Mg) exhibits superior sunlight-driven photocatalytic performance. The optimal Mg-ZnO shows an 8-fold increase in the photocatalytic activity compared to the pristine ZnO. Likewise, the most active photocatalyst shows high photoelectrochemical performance with a photocurrent response of 1.54 mA at the lowest onset potential, 11 times higher than the pristine ZnO. Tuning of the Mg content results in the generation of extra charge carriers and a reduced recombination rate, which are the crucial factors responsible for enhanced photocatalytic and photoelectrochemical performance.
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Affiliation(s)
| | | | - Riu Riu Wary
- Solar Energy Materials Research & Testing Laboratory, Department of Physics, National Institute of Technology Silchar, 788010 Silchar, Assam, India
| | - Andrey S Vasenko
- HSE University, 101000 Moscow, Russia
- I.E. Tamm Department of Theoretical Physics, P.N. Lebedev Physical Institute, Russian Academy of Sciences, 119991 Moscow, Russia
| | - Oleg V Prezhdo
- Department of Chemistry, University of Southern California, 90089 Los Angeles, California, United States
- Department of Physics & Astronomy, University of Southern California, 90089 Los Angeles, California, United States
| | - Ranjith G Nair
- Solar Energy Materials Research & Testing Laboratory, Department of Physics, National Institute of Technology Silchar, 788010 Silchar, Assam, India
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Sinha R, Roy N, Mandal TK. N-Doped Carbon Dots and ZnO Conglomerated Electrodes for Optically Responsive Supercapacitor Applications. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:4518-4529. [PMID: 36917688 DOI: 10.1021/acs.langmuir.3c00300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
The over-dependence of human society on fossil fuels for energy is exhausting the level of such non-renewable energy sources. Alternative energy storage systems have gained more popularity recently to counter this issue. In this context, we report the fabrication of N-doped carbon dot (N-CD)-decorated ZnO-based electrodes for supercapacitor applications. Due to the light-responsive nature of the N-CDs and ZnO, the electrode was also responsive under the influence of UV light. After the experimental tests, it was found that the areal capacitance value of the supercapacitor increased upto ∼58.9% when illuminated compared to that under the dark conditions. Moreover, the device showed a maximum areal capacitance of 2.6 mF/cm2 after photocharging and galvanostatically discharging at a current density value of 1.6 μA/cm2, which is quite comparable with the previously reported data. The doping of N-CDs with ZnO showed a significant improvement in the areal capacitance value under both illuminated (∼58.64%) and dark conditions (∼22.08%) compared to the case of pristine ZnO, which justifies the purpose of attaching N-CDs with ZnO. Therefore, in brief, we have fabricated a photoresponsive electrode material for supercapacitor application by combining N-CDs and ZnO. An explicit electrochemical characterization of the electrode was also done to identify the contribution from diffusion-controlled capacitance and double layer capacitance, and it was observed that the diffusion-controlled capacitance gets reduced from 59.1 to 33.6% when the scan rate is increased from 2 to 75 mV/s. Moreover, a detailed study has also been done to understand the reaction mechanism. It was confirmed that the defects in the electrode material played a vital role in the intercalation of K+ ions.
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Affiliation(s)
- Rupam Sinha
- Department of Chemical Engineering, Chaitanya Bharathi Institute of Technology, Gandipet 500075, Telangana, India
| | - Nirmal Roy
- School of Electronics Engineering, VIT-AP University, Amaravati 522237, Andhra Pradesh, India
| | - Tapas K Mandal
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
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4
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Zhang Y, Poon K, Masonsong GSP, Ramaswamy Y, Singh G. Sustainable Nanomaterials for Biomedical Applications. Pharmaceutics 2023; 15:pharmaceutics15030922. [PMID: 36986783 PMCID: PMC10056188 DOI: 10.3390/pharmaceutics15030922] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 03/06/2023] [Accepted: 03/10/2023] [Indexed: 03/16/2023] Open
Abstract
Significant progress in nanotechnology has enormously contributed to the design and development of innovative products that have transformed societal challenges related to energy, information technology, the environment, and health. A large portion of the nanomaterials developed for such applications is currently highly dependent on energy-intensive manufacturing processes and non-renewable resources. In addition, there is a considerable lag between the rapid growth in the innovation/discovery of such unsustainable nanomaterials and their effects on the environment, human health, and climate in the long term. Therefore, there is an urgent need to design nanomaterials sustainably using renewable and natural resources with minimal impact on society. Integrating sustainability with nanotechnology can support the manufacturing of sustainable nanomaterials with optimized performance. This short review discusses challenges and a framework for designing high-performance sustainable nanomaterials. We briefly summarize the recent advances in producing sustainable nanomaterials from sustainable and natural resources and their use for various biomedical applications such as biosensing, bioimaging, drug delivery, and tissue engineering. Additionally, we provide future perspectives into the design guidelines for fabricating high-performance sustainable nanomaterials for medical applications.
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Affiliation(s)
- Yuhang Zhang
- School of Biomedical Engineering, The University of Sydney, Camperdown, NSW 2008, Australia
| | - Kingsley Poon
- School of Biomedical Engineering, The University of Sydney, Camperdown, NSW 2008, Australia
- Sydney Nano Institute, The University of Sydney, Camperdown, NSW 2008, Australia
| | | | - Yogambha Ramaswamy
- School of Biomedical Engineering, The University of Sydney, Camperdown, NSW 2008, Australia
- Sydney Nano Institute, The University of Sydney, Camperdown, NSW 2008, Australia
- Correspondence: (Y.R.); (G.S.)
| | - Gurvinder Singh
- School of Biomedical Engineering, The University of Sydney, Camperdown, NSW 2008, Australia
- Sydney Nano Institute, The University of Sydney, Camperdown, NSW 2008, Australia
- Correspondence: (Y.R.); (G.S.)
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5
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Ejsmont A, Goscianska J. Hydrothermal Synthesis of ZnO Superstructures with Controlled Morphology via Temperature and pH Optimization. MATERIALS (BASEL, SWITZERLAND) 2023; 16:ma16041641. [PMID: 36837292 PMCID: PMC9960931 DOI: 10.3390/ma16041641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2023] [Revised: 02/12/2023] [Accepted: 02/14/2023] [Indexed: 05/14/2023]
Abstract
Zinc oxide, as a widely used material in optics, electronics, and medicine, requires a complete overview of different conditions for facile and easily reproducible syntheses. Two types of optimization of ZnO hydrothermal preparation from zinc acetate and sodium hydroxide solution are presented, which allowed for obtaining miscellaneous morphologies of materials. The first was a temperature-controlled synthesis from 100 to 200 °C, using citric acid as a capping agent. The formation of hexagonal rods at the lowest temperature was evidenced, which agglomerated to flower-like structures at 110 and 120 °C. It was followed by transformation to flake-like roses at 160 °C, up to disordered structures composed of nanosized plates (>180 °C). The transformations were generated through a temperature change, which had an impact on the diffusion effect of hydroxide and citrate complexes. The second optimization was the hydrothermal synthesis free of organic additives and it included only a pH variation from 7.5 to 13.5. It was found that by utilizing a slow-dropping process and varying amounts of NaOH solutions, it is possible to obtain well-formed hexagonal pellets at pH 8.0-8.5. Strongly basic conditions of pH 11.0 and 13.5 impeded superstructure formations, giving small elongated particles of ZnO. All samples were characterized by high phase purity and crystallinity, with a specific surface area of 18-37 m2/g, whereas particle size distribution indicated a predominance of small particles (<1 μm).
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Flora RMN, Palani S, Kowsalya P, Chamundeeswari M. Sunlight-driven antibacterial activity of a novel zinc oxide quantum dot and its optimization using Box-Behnken design-A medicament for communicable disease protective wearables. Biotechnol Appl Biochem 2023; 70:221-237. [PMID: 35398918 DOI: 10.1002/bab.2345] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Accepted: 03/25/2022] [Indexed: 11/06/2022]
Abstract
The current study focuses on microwave-assisted zinc oxide quantum dots synthesis (ZnO-QDs) from zinc oxide bionanocomposite (ZnO-BC) preparation. The novelty lies in the preparation of ZnO-QDs, since the natural elements present in ZnO-BC itself acted as a surface penetration enhancer without using any chemical agent. Under ultraviolet (UV) light ZnO-QDs emitted a blue glow, confirming the fluorescence property. Using Box-Behnken design, the experimental factors of ZnO-QDs were optimized, yielding a positive response of 350 nm absorbance and these results also matched with the UV-visible spectroscopy characterization studies of ZnO-QDs. Using Escherichia coli, the antibacterial activity of ZnO-BC in comparison to ZnO-QDs was determined using the well diffusion method and an inhibition zone ranging from 11 to 23 mm and in the broth assay the OD values were reduced by almost seven and 10 times for ZnO-BC and ZnO-QDs, respectively, when compared to the control (untreated). The antibacterial activity demonstrated that our newly prepared BC and its QDs have superior activity when compared to the standard antibiotics such as ampicillin. This type of nanomaterial can be used as a new bioactive natural material with light-assisted activity for antibacterial coatings in the manufacture of personal protective equipment.
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Affiliation(s)
| | - Subramani Palani
- Department of Biotechnology, Arunai Engineering College, Tiruvannamalai, Tamil Nadu, India
| | - Palanimuthu Kowsalya
- Department of Biotechnology, St. Joseph's College of Engineering, Chennai, Tamil Nadu, India
| | - Munusamy Chamundeeswari
- Department of Biotechnology, St. Joseph's College of Engineering, Chennai, Tamil Nadu, India
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Prerna, Agarwal H, Goyal D. Photocatalytic degradation of textile dyes using phycosynthesised ZnO nanoparticles. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.109676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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8
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Qiao H, Saray MT, Wang X, Xu S, Chen G, Huang Z, Chen C, Zhong G, Dong Q, Hong M, Xie H, Shahbazian-Yassar R, Hu L. Scalable Synthesis of High Entropy Alloy Nanoparticles by Microwave Heating. ACS NANO 2021; 15:14928-14937. [PMID: 34423972 DOI: 10.1021/acsnano.1c05113] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
High entropy alloy nanoparticles (HEA-NPs) are reported to have superior performance in catalysis, energy storage, and conversion due to the broad range of elements that can be incorporated in these materials, enabling tunable activity, excellent thermal and chemical stability, and a synergistic catalytic effect. However, scaling the manufacturing of HEA-NPs with uniform particle size and homogeneous elemental distribution efficiently is still a challenge due to the required critical synthetic conditions where high temperature is typically involved. In this work, we demonstrate an efficient and scalable microwave heating method using carbon-based materials as substrates to fabricate HEA-NPs with uniform particle size. Due to the abundant functional group defects that can absorb microwave efficiently, reduced graphene oxide is employed as a model substrate to produce an average temperature reaching as high as ∼1850 K within seconds. As a proof-of-concept, we utilize this rapid, high-temperature heating process to synthesize PtPdFeCoNi HEA-NPs, which exhibit an average particle size of ∼12 nm and uniform elemental mixing resulting from decomposition nearly at the same time and liquid metal solidification without diffusion. Various carbon-based materials can also be employed as substrates, including one-dimensional carbon nanofibers and three-dimensional carbonized wood, which can achieve temperatures of >1400 K. This facile and efficient microwave heating method is also compatible with the roll-to-roll process, providing a feasible route for scalable HEA-NPs manufacturing.
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Affiliation(s)
- Haiyu Qiao
- Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742, United States
| | - Mahmoud Tamadoni Saray
- Department of Mechanical and Industrial Engineering, University of Illinois at Chicago (UIC), Chicago, Illinois 60607, United States
| | - Xizheng Wang
- Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742, United States
| | - Shaomao Xu
- Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742, United States
| | - Gang Chen
- Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742, United States
| | - Zhennan Huang
- Department of Mechanical and Industrial Engineering, University of Illinois at Chicago (UIC), Chicago, Illinois 60607, United States
| | - Chaoji Chen
- Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742, United States
| | - Geng Zhong
- Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742, United States
| | - Qi Dong
- Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742, United States
| | - Min Hong
- Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742, United States
| | - Hua Xie
- Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742, United States
| | - Reza Shahbazian-Yassar
- Department of Mechanical and Industrial Engineering, University of Illinois at Chicago (UIC), Chicago, Illinois 60607, United States
| | - Liangbing Hu
- Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742, United States
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9
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Li S, Xia X, Vogt BD. Microwave-Enabled Size Control of Iron Oxide Nanoparticles on Reduced Graphene Oxide. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:11131-11141. [PMID: 34499521 DOI: 10.1021/acs.langmuir.1c01990] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Nanoparticle-functionalized 2D material networks are promising for a wide range of applications, but in situ formation of nanoparticles is commonly challenged by rapid growth. Here, we demonstrate controlled synthesis of small and dispersed iron oxide nanoparticles on reduced graphene oxide (rGO) networks through rapid localized heating with microwaves with low-cost iron nitrate as the precursor. The strong coupling of the microwave radiation with the rGO network rapidly heats the network locally to decompose the iron nitrate and generate iron oxide nanoparticles, while cessation of microwaves leads to rapid cooling to minimize crystal growth. Small changes in the microwave reaction time (<1 min) led to very large changes in the iron oxide morphology. The solid-state microwave syntheses produced narrower nanoparticle size distribution than conventional heating. These results illustrate the potential of solid-state microwave syntheses to control the nanoparticle size on 2D materials through rapid localized heating under the microwave process conditions, which should be extendable to a variety of transition metal oxide-rGO systems.
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Affiliation(s)
- Siyuan Li
- Department of Polymer Engineering, The University of Akron, 250 S Forge St, Akron, Ohio 44325, United States
| | - Xuhui Xia
- Department of Polymer Engineering, The University of Akron, 250 S Forge St, Akron, Ohio 44325, United States
| | - Bryan D Vogt
- Department of Chemical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
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Pachaiappan R, Rajendran S, Ramalingam G, Vo DVN, Priya PM, Soto-Moscoso M. Green Synthesis of Zinc Oxide Nanoparticles by
Justicia adhatoda
Leaves and Their Antimicrobial Activity. Chem Eng Technol 2021. [DOI: 10.1002/ceat.202000470] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Rekha Pachaiappan
- Adhiyaman Arts and Science College for Women 635207 Uthangarai Tamilnadu India
| | - Saravanan Rajendran
- Universidad de Tarapacá Laboratorio de Investigaciones Ambientales Zonas Áridas Departamento de Ingeniería Mecánica Facultad de Ingeniería Avda. General Velásquez 1775 Arica Chile
| | - Gomathi Ramalingam
- Adhiyaman Arts and Science College for Women 635207 Uthangarai Tamilnadu India
| | - Dai-Viet N. Vo
- Nguyen Tat Thanh University Center of Excellence for Green Energy and Environmental Nanomaterials (CE@GrEEN) 300A Nguyen Tat Thanh, District 4 755414 Ho Chi Minh City Vietnam
| | - P. Mohana Priya
- Indian Institute of Technology Tirupathi Department of Physics 517 506 Tirupathi India
| | - Matias Soto-Moscoso
- Universidad del Bío-bío Departamento de Física Facultad de Ciencias avenida Collao 1202, casilla 15-C Concepción Chile
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Zinc oxide nanoparticles: A comprehensive review on its synthesis, anticancer and drug delivery applications as well as health risks. Adv Colloid Interface Sci 2020; 286:102317. [PMID: 33212389 DOI: 10.1016/j.cis.2020.102317] [Citation(s) in RCA: 60] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 11/06/2020] [Accepted: 11/06/2020] [Indexed: 12/29/2022]
Abstract
In recent years, zinc oxide nanoparticles (ZnONPs) emerged as an excellent candidate in the field of optical, electrical, food packaging and particularly in biomedical research. ZnONPs show cancer cell specific toxicity via the pH-dependent (low pH) dissolution into Zn2+ ions, which generate reactive oxygen species and induce cytotoxicity in cancer cells. Further, ZnONPs have also been used as an effective carrier for the targeted delivery of several anticancer drugs into tumor cells. The increasing focus on ZnONPs resulted in the development of various synthesis approaches including chemical, pHysical, and green or biological for the manufacturing of ZnONPs. In this article, at first we have discussed the various synthesis methods of ZnONPs and secondly its biomedical applications. We have extensively reviewed the anticancer mechanism of ZnONPs on different types of cancers considering its size, shape and surface charge dependent cytotoxicity. Photoirradiation with UV light or NIR laser further increase its anticancer activity via synergistic chemo-photodynamic effect. The drug delivery applications of ZnONPs with special emphasis on drug loading mechanism, stimuli-responsive controlled release and therapeutic effects have also been discussed in this review. Finally, its side effects to vital body organs with mechanism via different exposure routes, the future direction of the ZnONPs research and application are also discussed.
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12
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Wojnarowicz J, Chudoba T, Lojkowski W. A Review of Microwave Synthesis of Zinc Oxide Nanomaterials: Reactants, Process Parameters and Morphoslogies. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E1086. [PMID: 32486522 PMCID: PMC7353225 DOI: 10.3390/nano10061086] [Citation(s) in RCA: 128] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 05/11/2020] [Accepted: 05/19/2020] [Indexed: 12/18/2022]
Abstract
Zinc oxide (ZnO) is a multifunctional material due to its exceptional physicochemical properties and broad usefulness. The special properties resulting from the reduction of the material size from the macro scale to the nano scale has made the application of ZnO nanomaterials (ZnO NMs) more popular in numerous consumer products. In recent years, particular attention has been drawn to the development of various methods of ZnO NMs synthesis, which above all meet the requirements of the green chemistry approach. The application of the microwave heating technology when obtaining ZnO NMs enables the development of new methods of syntheses, which are characterised by, among others, the possibility to control the properties, repeatability, reproducibility, short synthesis duration, low price, purity, and fulfilment of the eco-friendly approach criterion. The dynamic development of materials engineering is the reason why it is necessary to obtain ZnO NMs with strictly defined properties. The present review aims to discuss the state of the art regarding the microwave synthesis of undoped and doped ZnO NMs. The first part of the review presents the properties of ZnO and new applications of ZnO NMs. Subsequently, the properties of microwave heating are discussed and compared with conventional heating and areas of application are presented. The final part of the paper presents reactants, parameters of processes, and the morphology of products, with a division of the microwave synthesis of ZnO NMs into three primary groups, namely hydrothermal, solvothermal, and hybrid methods.
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Affiliation(s)
- Jacek Wojnarowicz
- Institute of High Pressure Physics, Polish Academy of Sciences, Sokolowska 29/37, 01-142 Warsaw, Poland; (T.C.); (W.L.)
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Naskar A, Lee S, Kim KS. Easy One-Pot Low-Temperature Synthesized Ag-ZnO Nanoparticles and Their Activity Against Clinical Isolates of Methicillin-Resistant Staphylococcus aureus. Front Bioeng Biotechnol 2020; 8:216. [PMID: 32266243 PMCID: PMC7096348 DOI: 10.3389/fbioe.2020.00216] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Accepted: 03/03/2020] [Indexed: 11/13/2022] Open
Abstract
Antimicrobial resistance (AMR) is widely acknowledged as a global health problem, yet the available solutions to this problem are limited. Nanomaterials can be used as potential nanoweapons to fight against this problem. In this study, we report an easy one-pot low-temperature synthesis of Ag-ZnO nanoparticles (AZO NPs) and their targeted antibacterial activity against methicillin-resistant Staphylococcus aureus (MRSA) strains. The physical properties of the samples were characterized by X-ray diffractometry (XRD), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS). Furthermore, minimum inhibitory concentration (MIC), zone of inhibition (ZOI), and scanning electron microscopy (SEM) images for morphological characterization of bacteria were assessed to evaluate the antibacterial activity of AZO NPs against both Gram-negative [Escherichia coli (E. coli) and Acinetobacter baumannii (A. baumannii) standard and AMR strains] and Gram-positive (S. aureus, MRSA3, and MRSA6) bacteria. The AZO NPs showed comparatively better antibacterial activity against S. aureus and MRSA strains than Gram-negative bacterial strains. This cost-effective and simple synthesis strategy can be used for the development of other metal oxide nanoparticles, and the synthesized nanomaterials can be potentially used to fight against MRSA.
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Affiliation(s)
| | | | - Kwang-sun Kim
- Laboratory of RNA Biochemistry & Superbacteria Research, Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan, South Korea
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